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Gold (atomic radius = 0.144nm) crystalli...

Gold (atomic radius = 0.144nm) crystallises in a face centred unit cell. What is the length of the side of the cell ?

A

`0.414`

B

`0.407`

C

`1.414`

D

`1.407`

Text Solution

Verified by Experts

The correct Answer is:
B
For a face-centred cubic unit cell (fcc) ,
Edge length (a) `=2sqrt(2)r`
`=2xx1.414xx0.144` nm
`=0.407` nm
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